09 May 2025, 15:22 [ UTC - 5; DST ]
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Post subject: Re: USA’s First Stealth Helo  Posted: 26 Apr 2020, 19:44 |
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Joined: 11/30/18
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Location: NH
Aircraft: F33A, 757/767
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And here is the first helicopter to exceed Mach 1
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Post subject: Re: USA’s First Stealth Helo Posted: 26 Apr 2020, 20:25 |
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Joined: 09/29/10
Posts: 5660
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Company: USAF Simulator Instructor
Location: Wichita Valley Airport (F14)
Aircraft: Bonanza G35
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Username Protected wrote: And here is the first helicopter to exceed Mach 1 Which helicopter is that?
_________________
FTFA RTFM
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Post subject: Re: USA’s First Stealth Helo Posted: 26 Apr 2020, 21:00 |
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Joined: 01/21/14
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Company: FAA Flight Check
Location: Oklahoma City, OK (KOKC)
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The video ends with it saying it is still the world’s quietest helicopter.
Not sure of the date of the video but I’m guessing that secret Blackhawk used during the Bin Laden raid now owns that title!
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Post subject: Re: USA’s First Stealth Helo Posted: 27 Apr 2020, 06:43 |
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Joined: 11/30/18
Posts: 2465
Post Likes: +2160
Location: NH
Aircraft: F33A, 757/767
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Username Protected wrote: And here is the first helicopter to exceed Mach 1 Which helicopter is that?
Airwolf!!!
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Post subject: Re: USA’s First Stealth Helo Posted: 27 Apr 2020, 08:20 |
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Joined: 12/22/07
Posts: 14253
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Company: Midwest Chemtrails, LLC
Location: KPTK (SE Michigan)
Aircraft: C205
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Username Protected wrote: ... that secret Blackhawk used during the Bin Laden raid now owns that title! Tell us more. Psst. Don't answer the door. They'll let themselves in ...
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Holoholo …
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Post subject: Re: USA’s First Stealth Helo Posted: 27 Apr 2020, 09:34 |
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Joined: 07/29/17
Posts: 1864
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Location: Freedom NH
Aircraft: Club Archer
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I read this years ago and was pleased to see it's been declassified. CIA developed some helos for recon and extracting assets from behind the iron curtain in the early 70s. They not only needed to be quiet but needed FLIR to fly lights out given the lack of useful NVGs then and that was heavy stuff so it required more power and the logical engineering train got underway.  The story is "skunk works" levels of interesting. This article goes into the incredibly precise engineering required and I thought the maintenance results of them getting to pick and choose engines and transmissions that weren't just within limits but as close to perfect as possible were very interesting. https://www.cia.gov/library/readingroom ... 122561.pdf
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Post subject: Re: USA’s First Stealth Helo Posted: 28 Apr 2020, 02:34 |
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Joined: 11/18/13
Posts: 396
Post Likes: +65
Location: F70
Aircraft: AEST601B S-211 B-777
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good read. only part way through and a lot of good stuff in there. I got to fly a 500 E model quite a bit and always wondered why they switched from the 4 blade to the 5 blade set up. It sounds like a lot of present day “stuff” was garnered from that project. Very productive in a short period of time.
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